US6813922B2 - Bending machine for rods with resettable folding shank - Google Patents
Bending machine for rods with resettable folding shank Download PDFInfo
- Publication number
- US6813922B2 US6813922B2 US10/240,342 US24034202A US6813922B2 US 6813922 B2 US6813922 B2 US 6813922B2 US 24034202 A US24034202 A US 24034202A US 6813922 B2 US6813922 B2 US 6813922B2
- Authority
- US
- United States
- Prior art keywords
- snout
- bending
- turner
- folding
- machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 title claims abstract description 52
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 210000004894 snout Anatomy 0.000 claims description 75
- 210000003128 head Anatomy 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
- B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
Definitions
- the present invention relates to an improvement to a numerically controlled machine for curving, forming, folding or bending bars or sections, and to methods for controlling such a machine.
- a numerically controlled machine for curving, forming, folding or bending a bar having conventional components including a bed and a rotary bending head.
- the rotary bending head is able to obtain folds in various planes.
- a bar is moved horizontally along a line of travel by a feed station, arranged upstream, and is conveyed through a folding snout carried by the bed, and then through a turner of the bending head.
- the turner is formed of a bending roller and a folding pin, and is able to turn in a horizontal plane about an axis of rotation aligned with the axis of the bending roller.
- the folding snout is mounted to move in translation along the line of travel, and is moved continuously between one or more forward bending positions in which the snout is near the roller, and one or more positions which are retracted toward the upstream end, and the bending region between the turner and the bed is left totally free.
- FIG. 1 is a schematic illustration of the bending machine, showing the various movements that can be accomplished on the machine.
- FIGS. 2A, 2 B and 2 C are sequential schematic illustrations of the bending machine, showing the production of a parallel-branch closed loop.
- FIG. 3 is a schematic illustration of the bending machine, showing the production of loops or folds with different radii.
- FIGS. 4A, 4 B, 4 C, 4 D and 4 E are sequential schematic illustrations of the bending machine, showing the production of loops at both ends of a portion of wire.
- FIG. 5 is a schematic illustration of the bending machine, showing production of the last fold in a long part.
- FIG. 6 is a schematic illustration of the bending machine, showing the production of flat closed parts.
- FIGS. 7A, 7 B, 7 C, 7 D and 7 E are sequential schematic illustrations of the bending machine, showing the production of a large arc with a large radius followed by a fold with a small radius.
- FIGS. 8A and 8B are sequential schematic illustrations of the bending machine, showing the production of two opposing folds in one hit.
- FIGS. 9A, 9 B, 9 C and 9 D are sequential schematic illustrations of the bending machine, showing the folding without relative movement between the folding pin and the wire.
- bar has been used in the present description and in the claims to denote, more generally, an unfinished part which can be a bar, a wire or a section prior to bending.
- achievements and movements have been described with respect to a horizontal plane, as shown in the figures. Such achievements can, of course, be reproduced in all working planes.
- FIG. 1 schematically depicts, from above, a numerically controlled machine which is produced in accordance with the present invention.
- the machine conventionally includes a bed ( 1 ) and a rotary bending head ( 2 ) so as to be able to obtain folds in various planes.
- a bar ( 4 ) is moved horizontally along a line of travel ( 5 ) by a feed station (not shown) which is situated upstream.
- the bar ( 4 ) is conveyed through a folding snout ( 7 ) carried by the bed ( 1 ), and then through a turner ( 10 ) of the bending head ( 2 ).
- the turner ( 10 ) is formed of a bending roller ( 8 ) and a folding pin ( 9 ).
- the turner ( 10 ) can turn in a horizontal plane about an axis of rotation aligned with the axis of the bending roller ( 8 ).
- the turner ( 10 ) is carried by a transverse carriage ( 11 ) which is additionally able to move the turner in one direction and the other at a right angle to the direction of the line of travel ( 5 ).
- a pickup gripper ( 3 ) is placed on the line of travel ( 5 ). downstream of the turner ( 10 ). As an example, the pickup gripper ( 3 ) can be placed on the outside of the turner, as shown in the figures. The pickup gripper ( 3 ) is used only, in certain operations, which are discussed below.
- the turner ( 10 ) has two possibilities for movement.
- the turner can rotate in a horizontal plane, shown by the arrow ( 12 ), so as to pivot the turner and produce either a fold angle between the bar portion ( 4 a ) and the bar portion ( 4 b ) passing through the turner, by pressing against surfaces ( 7 ′) of the snout ( 7 ), or a loop, by forming on the bending roller ( 8 ).
- the turner can also move in horizontal translation, shown by the arrow ( 13 ), at a right angle to the line of travel ( 5 ).
- the folding snout ( 7 ) and the cutter ( 6 ) which is associated with the folding snout ( 7 ) are mounted for translational movement along the line of travel ( 5 ), shown by the arrow ( 14 ), and are continuously moved as a single unit between one or more forward work positions in which the snout is near the roller ( 8 ) and one or more positions which are retracted toward the upstream end, totally freeing the working region between the turner and the bed.
- the cutter ( 6 ) is placed upstream of the folding snout ( 7 ), on the line of travel ( 5 ), and moves with it. Other locations are also possible.
- a closed loop can be produced by the operations which are schematically shown in FIGS. 2A, 2 B and 2 C.
- the start of the loop is produced by rotating the turner ( 10 ) to the left, as is shown in FIG. 2 A.
- the loop is produced by rotating and translating the turner ( 10 ) to the right, as is shown in FIG. 2 B.
- the loop is closed at the desired angle, for example, by returning the end of the bar to a position parallel with the line of travel ( 5 ), as is shown in FIG. 2 C.
- Loops or folds with several radii can be produced by the operations which are schematically shown in FIG. 3 .
- By changing the tool it is possible to produce loops or folds with several radii using a stepped retractable shaft ( 15 ) with several radii, in combination with a snout of an appropriate profile.
- the position of the snout with respect to the tool can be adjusted so as to guide the bar correctly and reduce the reaction against bending.
- “producing the loop” is to be understood as meaning “producing a closed part” or producing bends of greater than 180°.
- Loops can be produced at both ends of a length of bar by the operations which are schematically shown in FIGS. 4A, 4 B, 4 C, 4 D and 4 E.
- rotating the turner ( 10 ) to the left begins a first loop.
- the snout is then in a first forward position ( 7 a ).
- the snout is advanced in the downstream direction, as far as a forward position ( 7 b ).
- Rotating the turner ( 10 ) to the right closes the first loop.
- FIG. 4C once the straight length of bar has been fed through, the head pivots to the left to begin the second loop.
- the snout is still forward and placed in a position ( 7 c ), while the bending roller ( 8 ) is retracted under the snout.
- the length of bar is picked up in the pickup gripper ( 3 ) so that the bar is cut to the desired length, and the head is moved in translation and turned to the right to bend the second loop.
- the snout is then retreated to the cutting position ( 7 d ).
- the snout is retreated and retracted, completely to the position ( 7 e ), to allow the turner ( 10 ) to continue its rotation to finish the second loop and free the end of the bar.
- the last fold in a long part can be produced by the operations which are schematically shown in FIG. 5 .
- the pickup gripper ( 3 ) grasps the wire ( 4 ), and the snout ( 7 ) and the cutter ( 6 ) position themselves to cut the part to the desired length. Once the part has been cut, the snout disengages and retreats, and the turner ( 10 ) finishes the last fold in the long part.
- Flat closed parts can be produced by the operations which are schematically shown in FIG. 6 .
- the operations used to finish the last fold that closes a frame are the same as the operations used to produce the last fold in a long part.
- a large arc with a large radius followed by a fold with a small radius can be produced by the operations which are schematically shown in FIGS. 7A, 7 B, 7 C, 7 D and 7 E.
- the guide snout is replaced with an asymmetric snout ( 7 ′ a ) with a folding shape of a different radius ( 9 b ).
- the large arc of the part is begun by translation and rotation of the part to wind the part around the large radius of curvature ( 9 a ). The snout is then in the position ( 7 ′ b ).
- the snout is advanced to the position ( 7 ′ c ), and the head continues its translational and rotational movements to obtain the desired angle, for example, to bring the end of the part back, parallel to the line of travel ( 5 ), as shown in the figure.
- the snout is retreated to a position ( 7 ′ d ), to completely disengage the loop and place the snout in the chosen position for producing the fold, while the turner returns in translation to its starting position.
- the snout advances to a position ( 7 ′ e ). The turner continues its return, in translation, and produces the fold by rotating in the opposite direction to the previous one.
- FIGS. 8A and 8B Two opposing folds can be produced in a single hit by the operations which are schematically shown in FIGS. 8A and 8B.
- FIGS. 8A and 8B the combination of the forward movements of the snout ( 7 ), the feed of the bar ( 4 ), and the translation of the turner ( 10 ) makes it possible to simultaneously produce two opposing folds.
- Folding can be achieved without relative movement between the folding pin ( 9 ) and the bar, as is schematically shown in FIGS. 9A through 9D.
- movements provided bar feed, forward movement of the snout, folding, and raising of the head
- the relative movement of the pin ( 9 ) with respect to the bar can be eliminated.
- the advantages of the present invention include, but are not limited to, the following.
- Large-diameter closed or unclosed loops can be produced.
- Several radii on one and the same parts can be produced, without limitation.
- Loops can be formed at both ends of one and the same part.
- a fold can be produced at the last end of a long part without slowing the folding operation.
- Frames can be produced without the part twisting on itself, guaranteeing flatness of the frame.
- the problems of variation in folding, and pin/folding snout distance can be eliminated.
- Reverse folds can be produced without a loss of time.
- the ability to work on soft or coated wires is made possible by adjustment of the contact between the tool and wires. It is possible for the snout to be brought up close to the part during folding, for good guidance, and retracting the part at the last moment, to free the working region. It is also possible to complete a loop by retracting the snout.
Abstract
Description
Claims (13)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0004317A FR2806943B1 (en) | 2000-04-03 | 2000-04-03 | ERASABLE FOLDING NOSE BAR BENDING MACHINE |
FR0004317 | 2000-04-03 | ||
FR00/04317 | 2000-04-03 | ||
PCT/FR2001/000936 WO2001074509A1 (en) | 2000-04-03 | 2001-03-28 | Bending machine for rods with resettable folding shank |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030089153A1 US20030089153A1 (en) | 2003-05-15 |
US6813922B2 true US6813922B2 (en) | 2004-11-09 |
Family
ID=8848869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/240,342 Expired - Lifetime US6813922B2 (en) | 2000-04-03 | 2001-03-28 | Bending machine for rods with resettable folding shank |
Country Status (11)
Country | Link |
---|---|
US (1) | US6813922B2 (en) |
EP (1) | EP1272293B1 (en) |
AT (1) | ATE268231T1 (en) |
AU (1) | AU2001246656A1 (en) |
CA (1) | CA2404162C (en) |
DE (1) | DE60103632T2 (en) |
DK (1) | DK1272293T3 (en) |
ES (1) | ES2222359T3 (en) |
FR (1) | FR2806943B1 (en) |
PT (1) | PT1272293E (en) |
WO (1) | WO2001074509A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040050136A1 (en) * | 2000-10-31 | 2004-03-18 | Joel Etienne | Fast and automated tool-changing device with standard conical tool support for digitally controlled bending machine |
US20070107483A1 (en) * | 2005-11-15 | 2007-05-17 | Antonios Anagnostopoulos | Machine and method for preventing torsion of wire, material of prismatic cross-section, and rod material |
US20080078226A1 (en) * | 2006-10-03 | 2008-04-03 | Antonios Anagnostopoulos | System and process for production of three-dimensional products from wire |
US20120279274A1 (en) * | 2009-11-24 | 2012-11-08 | M.E.P. Macchine Elettroniche Piegatrici Spa | Apparatus for Bending Elongated Metal Elements, Such as Metal Bars, round Pieces or Wire, and Relative Bending Method |
US20150040634A1 (en) * | 2012-03-24 | 2015-02-12 | Numalliance | Bending machine having a bending head that is movable about a stationary bending shank |
KR20160013097A (en) * | 2013-05-20 | 2016-02-03 | 엠.이.피. 머신 일레트로니쉐 피에가트리치 에스피에이 | Machine for bending metal products and corresponding bending method |
US20170225213A1 (en) * | 2014-08-06 | 2017-08-10 | Msv Systems Cz S.R.O. | Bending Head, Especially for an Automatic Bending Machine |
US10953448B2 (en) * | 2015-06-12 | 2021-03-23 | Sanoh Industrial Co., Ltd. | Method and device for bending pipe |
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DE102005047078B3 (en) * | 2005-09-30 | 2007-05-03 | Trumer Schutzbauten Gesmbh | Bending machine, in particular cable bending machine |
FR2892648B1 (en) * | 2005-10-28 | 2007-12-14 | Numalliance Soc Par Actions Si | MACHINE FOR CAMBING, CHEESE, FOLDING OR BENDING BARS, WIRES OR PROFILES |
DE102009024075B4 (en) | 2009-06-05 | 2012-11-29 | Wafios Ag | Bending device for rod-shaped workpieces |
DE102011106942A1 (en) | 2011-07-08 | 2013-01-10 | Wafios Ag | Bending device for rod-shaped workpieces |
CN102688920B (en) * | 2011-12-25 | 2014-08-06 | 河南科技大学 | Pipe bender and bending method using pipe bender |
CN102941290B (en) * | 2012-11-16 | 2015-01-28 | 苏州汇川技术有限公司 | Steel bar bending machine and steel bar bending machine control method |
AT514954B1 (en) * | 2014-04-09 | 2015-05-15 | Stonawski Rudolf Mag | Device and method for bending a profile element |
CN104772407A (en) * | 2015-03-26 | 2015-07-15 | 金陵科技学院 | Control system based on numerical-control wire bending robot |
CN104942051B (en) * | 2015-05-14 | 2017-06-16 | 山东电力建设第一工程公司 | A kind of earthing pole anchor ear making apparatus and preparation method thereof |
CN105880984A (en) * | 2016-06-01 | 2016-08-24 | 建科机械(天津)股份有限公司 | Center shaft dismounting mechanism of steel bar bender |
CN111408643A (en) * | 2020-03-30 | 2020-07-14 | 大同新成新材料股份有限公司 | Automatic forming machine for intelligent pantograph carbon slide plate carbon strip and forming method thereof |
CN113290092B (en) * | 2021-07-26 | 2021-10-29 | 广东高谱弯曲技术有限公司 | Positive and negative bending mechanism and bending method for profile |
IT202100022250A1 (en) * | 2021-08-24 | 2023-02-24 | Simat S R L | MACHINE AND PROCEDURE FOR FOLDING AN OBLONG PRODUCT |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US3857271A (en) | 1972-05-02 | 1974-12-31 | Evg Entwicklung Verwert Ges | Bending machine for rod or strip material |
US4248273A (en) | 1979-02-28 | 1981-02-03 | Marcello Del F | Stirrup machine |
FR2553314A1 (en) | 1983-10-12 | 1985-04-19 | Piegatrici Macch Elettr | Machine making concrete reinforcing stirrups |
EP0349953A2 (en) * | 1988-07-05 | 1990-01-10 | Heinz Ruhl | Apparatus for working rod material |
US5025651A (en) * | 1989-01-18 | 1991-06-25 | M.E.P. Macchine Elettroniche Piegatrici S.P.A. | Movable shears upstream of a bending assembly and method to bend the trailing end of bars |
US5375447A (en) * | 1992-09-15 | 1994-12-27 | M.E.P. Macchine Elettroniche Piegatrici Spa | Method to carry out bends and relative device |
FR2715334A1 (en) | 1994-01-21 | 1995-07-28 | Automatisation Ste Francaise | Metal rod bending machine |
EP0850707A1 (en) | 1996-10-01 | 1998-07-01 | M.E.P. Macchine Elettroniche Piegatrici S.p.A. | Bending method for a double shaping machine and the relative double shaping machine with movable winged elements |
WO1999026739A1 (en) | 1997-11-26 | 1999-06-03 | M.E.P. Macchine Elettroniche Piegatrici S.P.A. | Bending machine with variable bending tool |
-
2000
- 2000-04-03 FR FR0004317A patent/FR2806943B1/en not_active Expired - Fee Related
-
2001
- 2001-03-28 US US10/240,342 patent/US6813922B2/en not_active Expired - Lifetime
- 2001-03-28 EP EP01919587A patent/EP1272293B1/en not_active Expired - Lifetime
- 2001-03-28 AU AU2001246656A patent/AU2001246656A1/en not_active Abandoned
- 2001-03-28 CA CA002404162A patent/CA2404162C/en not_active Expired - Lifetime
- 2001-03-28 DK DK01919587T patent/DK1272293T3/en active
- 2001-03-28 DE DE60103632T patent/DE60103632T2/en not_active Expired - Lifetime
- 2001-03-28 ES ES01919587T patent/ES2222359T3/en not_active Expired - Lifetime
- 2001-03-28 AT AT01919587T patent/ATE268231T1/en active
- 2001-03-28 WO PCT/FR2001/000936 patent/WO2001074509A1/en active IP Right Grant
- 2001-03-28 PT PT01919587T patent/PT1272293E/en unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3857271A (en) | 1972-05-02 | 1974-12-31 | Evg Entwicklung Verwert Ges | Bending machine for rod or strip material |
US4248273A (en) | 1979-02-28 | 1981-02-03 | Marcello Del F | Stirrup machine |
FR2553314A1 (en) | 1983-10-12 | 1985-04-19 | Piegatrici Macch Elettr | Machine making concrete reinforcing stirrups |
EP0349953A2 (en) * | 1988-07-05 | 1990-01-10 | Heinz Ruhl | Apparatus for working rod material |
US5025651A (en) * | 1989-01-18 | 1991-06-25 | M.E.P. Macchine Elettroniche Piegatrici S.P.A. | Movable shears upstream of a bending assembly and method to bend the trailing end of bars |
US5375447A (en) * | 1992-09-15 | 1994-12-27 | M.E.P. Macchine Elettroniche Piegatrici Spa | Method to carry out bends and relative device |
FR2715334A1 (en) | 1994-01-21 | 1995-07-28 | Automatisation Ste Francaise | Metal rod bending machine |
EP0850707A1 (en) | 1996-10-01 | 1998-07-01 | M.E.P. Macchine Elettroniche Piegatrici S.p.A. | Bending method for a double shaping machine and the relative double shaping machine with movable winged elements |
WO1999026739A1 (en) | 1997-11-26 | 1999-06-03 | M.E.P. Macchine Elettroniche Piegatrici S.P.A. | Bending machine with variable bending tool |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7124486B2 (en) | 2000-10-31 | 2006-10-24 | Macsoft. S.A. | Fast and automated tool-changing device with standard conical tool support for digitally controlled bending machine |
US20040050136A1 (en) * | 2000-10-31 | 2004-03-18 | Joel Etienne | Fast and automated tool-changing device with standard conical tool support for digitally controlled bending machine |
US20070107483A1 (en) * | 2005-11-15 | 2007-05-17 | Antonios Anagnostopoulos | Machine and method for preventing torsion of wire, material of prismatic cross-section, and rod material |
US7610788B2 (en) | 2005-11-15 | 2009-11-03 | Antonios Anagnostopoulos | Machine and method for preventing torsion of wire, material of prismatic cross-section, and rod material |
US20080078226A1 (en) * | 2006-10-03 | 2008-04-03 | Antonios Anagnostopoulos | System and process for production of three-dimensional products from wire |
US7878038B2 (en) * | 2006-10-03 | 2011-02-01 | Antonios Anagnostopoulos | System and process for production of three-dimensional products from wire |
US9566636B2 (en) * | 2009-11-24 | 2017-02-14 | M.E.P. Macchine Elettroniche Piegatrici Spa | Apparatus for bending elongated metal elements, such as metal bars, round pieces or wire, and relative bending method |
US20120279274A1 (en) * | 2009-11-24 | 2012-11-08 | M.E.P. Macchine Elettroniche Piegatrici Spa | Apparatus for Bending Elongated Metal Elements, Such as Metal Bars, round Pieces or Wire, and Relative Bending Method |
US20150040634A1 (en) * | 2012-03-24 | 2015-02-12 | Numalliance | Bending machine having a bending head that is movable about a stationary bending shank |
KR20160013097A (en) * | 2013-05-20 | 2016-02-03 | 엠.이.피. 머신 일레트로니쉐 피에가트리치 에스피에이 | Machine for bending metal products and corresponding bending method |
US20160107217A1 (en) * | 2013-05-20 | 2016-04-21 | M.E.P. Macchine Elettroniche Piegatrici Spa | Machine for bending metal products and corresponding bending method |
US10265749B2 (en) * | 2013-05-20 | 2019-04-23 | M.E.P. Macchine Elettroniche Piegatrici Spa | Machine for bending metal products and corresponding bending method |
KR102181884B1 (en) | 2013-05-20 | 2020-11-24 | 엠.이.피. 머신 일레트로니쉐 피에가트리치 에스피에이 | Machine for bending metal products and corresponding bending method |
US11325173B2 (en) | 2013-05-20 | 2022-05-10 | M.E.P. Macchine Elettroniche Piegatrici Spa | Machine for bending metal products and corresponding bending method |
US20170225213A1 (en) * | 2014-08-06 | 2017-08-10 | Msv Systems Cz S.R.O. | Bending Head, Especially for an Automatic Bending Machine |
US10441985B2 (en) * | 2014-08-06 | 2019-10-15 | Msv Systems Cz S.R.O. | Bending head, especially for an automatic bending machine |
US10953448B2 (en) * | 2015-06-12 | 2021-03-23 | Sanoh Industrial Co., Ltd. | Method and device for bending pipe |
Also Published As
Publication number | Publication date |
---|---|
FR2806943A1 (en) | 2001-10-05 |
AU2001246656A1 (en) | 2001-10-15 |
EP1272293A1 (en) | 2003-01-08 |
US20030089153A1 (en) | 2003-05-15 |
FR2806943B1 (en) | 2002-08-16 |
ATE268231T1 (en) | 2004-06-15 |
PT1272293E (en) | 2004-10-29 |
DE60103632T2 (en) | 2005-06-16 |
CA2404162A1 (en) | 2001-10-11 |
DK1272293T3 (en) | 2004-08-30 |
DE60103632D1 (en) | 2004-07-08 |
EP1272293B1 (en) | 2004-06-02 |
CA2404162C (en) | 2007-06-26 |
WO2001074509A1 (en) | 2001-10-11 |
ES2222359T3 (en) | 2005-02-01 |
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Legal Events
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AS | Assignment |
Owner name: MACSOFT, S.A., FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ETIENNE, JOEL;REEL/FRAME:013811/0138 Effective date: 20020910 |
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
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